Brake



w. s SPIETH EI'AL BRAKE April 28, 1942.

Filed April 3, 1939 s SheetS -S heet'l m $19 Q v m9 L w 1721267223 25: Wzllaam/fi 3,0465%,

Cami. Tao/v EM ATTORNEY.

Ap i w. s. SPIETH my BRAKE Filed April 5, 1959 3 Sheets-Sheet 2 Car Z E rm,

ATTORNEY.

Patented Apr. 28, 1942 A UNITED STATES PATENT OFFICE.

" BRAKE William S. Spieth and Carl E. Tack, Chicago, Ill., assignors to American Steel Foundries, Chicago, 111., a corporation of New Jersey Application April 3, 1939, Serial No. 265,709

46 Claims.

Our invention relates to brake rigging for railway cars and more particularly to such a type of rigging as has been generally designated the disc type wherein two series of flat disc-like plates are arranged in inter-leaved relationship, one of which being secured to a rotating part of the truck and the other series being so secured to a non-rotating part as to permit their frictional engagement when the brakes are applied.

Considerable development and experimental work has recently been done in devising braking methods on railway cars which operate independently of the wheels or at least utilize braking surfaces different from thosewhich have commonly been in use. In devising such an arrangement accessibility and length of life are very important factors inasmuch as because of its very nature, braking equipment requires certain replacements of parts which are designed to be worn away.

The general object of our invention is to devise such a structure which will be particularly suitable for application to railway cars.

A further object of our invention is a novel form of braking arrangement for a railway wheel and axle assembly wherein a minimum of heat resulting from braking friction will be transmitted to the wheel. I

Cur invention also comprehends an arrangement which is largely self-cooling when utilized on railway rolling stock. 1

Our invention comprehends an arrangement which is suitable for application to a plain wheel and axle assembly. or an assembly of the roller bearing type and more particularly an antifrictional arrangement wherein the wheels at opposite ends'of the axle are mounted upon an outer axle or housing sleeved over the inner axle which extends therethrough and is received in journals as a means of connection to associated 40 "parts .of the truck frame.

Our 'fioveliarrangement is particularly suitable for railway truckswhereir a maximum of clearance conditions is desirablebetween the wheels inasmuch as most of the functioning partsofpur braking arrangement are disposed between th truck frame and the adjacent wheel at each side of the truck. Our invention is also suitable for application to one wheel of a wheel and axle assembly or equally suitable for application to both 50 wheels thereof. In the latter case our novel brake arrangement is so constructed as to prevent increase of stresses in' the inner axle of such.

a structure as that shown in the associated drawings except the relatively unimportant tension stresses incident, to the compressing together of the friction plates designed to provide the re- 1 verse plane through one end of a wheel and axle assembly embodying one form of our invention,

the section being taken substantially in the plane indicated by the line ll of Figure 3 and the view'showing also portions of an associated truck frame.

' Figure 2 is a fragmentary top plan view of a portion of. the structure shown in Figure 1, partly in section, the section being taken substantially in the transverse horizontal plane indicated by the line 2--2 of Figure 3.

Figure 3 is aside elevation. partly in section,,

of the structure shown in Figures 1 and 2, showing principally the arrangement of the truck frame parts and being partly in section, the section being taken substantially in the vertical longitudinal planes indicated by the line 3-4 of Figure 2. 1

Figure 4 is a section through the structure shown in Figures 1, 2 and 3,.the' view being taken I substantially in the vertical longitudinal plane indicated by the line 44 of Figure 1 and certain parts being omitted therefrom for the sake of clarity.

Figure 5 is a partial elevation of the stationary plate assembly, the view being taken in the longitudinal vertical plane indicated by the line 6-5 of Figure 1. I

Figure 61s a fragmentary section taken in the plane as indicated at 68 (Figure 5) through the stationary plate assembly shown therein, showing in conjunction therewith, also in section, a portion of the next adjacent stationary plate and a portion of the rotating plate therebetween.

a Figure 7 is a fragmentary sectional view showing analternat e seating arrangement for the rator plates in releasedspgsition, the section being taken in a transverse radial planegenerally similar-to the confesponding portion shown in Figure 1.

Figure 8 is a reduced plan view of the wheel and axle assembly shown in Figure 1 and illustrating both ends of said assembly.

Describing the structure in greater detail, it

may be noted that the truck frame side member generally designated 2 is of well known truss form having the compression member 4, the tension member 8 and the integral column 8 joining said members and formingtherewith a bolster opening it serving as the usual means of con nection to a load carrying member (not shown).

The tension and compression members merge adjacent their ends in the portion of the side frame over the axle, said portion being formed with the guide columns I2 and I4, forming therebetween the journal opening I5, and upon said columns may be secured wear plates I6, I8, said columns forming guide means in abutment with the wear plates II, I1 on the Journal box I8 of novel form. The tie bar 29 extends between the lower ends of the columns I2 and I 4 and is secured thereto by the bolt and nut assemblies 3I, M. The said journal box has wing members I9 and 2I at opposite ends thereof, bridging the side walls and forming spring seat 23, 23 upon which may be superposed the load carrying coil springs 25, 25, the upper ends of said springs having abutment as at 21, 2! against the transverse webs forming seats therefor between the lateral walls of the side frame.

The journal box I8 has a central cylindrical portion joined to the end walls thereof by the longitudinal rib I3, said cylindrical portion having the center bore 20 receiving the sleeve 22 formed of anti-friction metal, such as bronze, said sleeve being mounted upon the end of the inner axle 24 of the wheel and axle assembly in annular abutment with the outer edge of the shrink collar 26 whose inner edge has annular abutment with the core or inner race 28 of the roller bearing generally designated 30, said roller bearing comprising a series of rollers 32, 32 mounted upon said inner race and retained in spaced relationship between the cage 34, said rollers likewise having engagement with the outer race or cup 38 which is seated within the hollow end of the outer axle or housing 38 in abutment with the shoulder indicated at 40. By this arrangement it will be apparent that axial movement of the sleeve 22 upon the inner axle 24 may serve as a means of adjusting the tightness of the bearing 30inasmuch as the thrust collar 42 abuts the outer end of the sleeve 22 and in turn is engaged by the nut 44 which has threaded engagement with the outer end of the axle 24 and may be secured in any desired position thereon by means of the cap screws, 48 extending through the lock nut 44 and having threaded engagement with the end of the axle 24, the heads of said capscrews being drilled to receive the wire 48 serving to prevent their accidental withdrawal. The entire journal opening may be enclosed by the cap 49 having the flange about its inner perimeter in abutment with the outboard wall 53 of the-journal box and secured thereto by a series of cap screws 55, 55, the head of each of said cap screws being drilled to receive the securing wire 5'1.

The bearing 30 has the lubricant cavity 50 at its open end with the oil baffle 59 therein, said cavity being closed by the closure plate52'whose.

inner annular edge has abutment as at 54 with the outer race 35, thus retaining 'it in position against-the shoulder 40. The closure plate 52 is of novel form having a series of radial vanes 58, 58 serving a air agitators as well as reinforcing the structural strength of said closure plate. The closure plate'52 has also the annular securing flange 58 around the perimeter of board wall of the journal box.

which may be formed a series of bolt openings 60, 60 -for reception of the securing bolts 82, said bolts extending through aligned openings 64, 84 formed about the perimeter of the bell-like end of the housing or outer axle 38 and upon the inboard ends of said bolts may be threaded the nuts 88, 88, said nuts being locked in position by any convenient means. Pressed upon the bell-like end of the outer axle or housing 38 is the wheel 88, said wheel being positioned thereon against the annular shoulder 10 formed at the inboard edge of said bell-like end. Secured on the outboard face of the wheel 68 is the pad I2 of plate-like form serving to insulate the body of the wheel from the friction developed in the braking parts. Our novel brake mechanism generally designated 15 (Figure 8) comprises the inboard rotor plate I4, said plate abutting the pad 12. Held in spaced relationship with the plate I4 by the wave type release springs 15, I6 are the middle rotor plate I8 and the outboard rotor plate 80, said outboard rotor plate in its released position being seated around its inner perimeter as at 82 against the before-mentioned annular flange. Each of the rotor plates is sleeved upon the closure plate 52 in the manner best seen in Figure 1 or in the modification of Figure '7. In the said modification of Figure 7 the middle and outboard rotor plates I18 and I are provided with annular tapered surfaces along the inner perimeters of their outboard edges which may abut respectively the complementary tapered annular seats i8I and I83 formed on the closure plate 52. a

Inter-leaved with the rotating plates are three stationary plates or stators 84, 86 and 88, so called because they are held against rotation by their manner of connection to the journal box hereafter described. These plates, however, are also permitted axial movement so that all the plates, both stationary and rotary, can be compressed into one solid pile for brake application. The axial movement of the stationary plates is afforded along a series of guide means 90, 90 each of said guide means comprising a hollow stud 92 with the intermediate shoulder 94 serving as a seat for the intermediate stator 86 as best seen in the sectional view of Figure 1. Housed within each guide means 92 is a movable pin 96 whose inboard end is welded or otherwise secured as at 98 (Figure 1) to the adjacent radially outermost portion of said stator 84. Upon each stud 92 is sleeved a release spring or spacer spring H0 and at the outer end of each pin 86 is secured a spring cap II2 forming retaining means for the release spring H4. The outboard end of each pin 96 has abutment as at I00 (Figure 1, bottom) with the radially arranged flange I02 of the large ring nut I04, said abutment afiording a stop for the pin 96, thus positioning the stator 84 in its released position.

The ring nut I04 has threaded engagement as at I06 with an annula'r flange I08, said flange being formed on the outer perimeter of the in- The ring nut I04 has the top lever arm I05 (Figure 4) with the pivotal connection as at I0'I with the'pull rod I09 (Figure 1), said pull rod serving as a means of connection to .any convenient reciprocating hand brake arrangement. It will thus be seen that actuation of the pull rod will serve to rotate the ring nut I04 and through the threaded engagement already referred to at I06 the said nut by said rotation will be moved axially for hand brake application of the intermediate stator lid.

Power means is in the form of a ring-type air cylinder IIE integrally formed with the Jourwith the opposing flve surfaces of the stationary plates wherein the braking action is produced. a Release of the power means permits axial movement of the plates with respect to each other, said movement being controlled by the beforementioned wave-type. release spring I8 as well as the coil springs H0 and by the release springs I24 (Figure 6) I positioned as by means of the studs I26, I25 between the outboard stationary.

plate 88 and the middle stationary plate 86.

It will be noted that each of the rotary plates consists of a single member but that each of the stationary plates is a built-up unit comprising a relatively thin disc member I28 (Figure 6) upon either or both sides of which may be carried a relatively thick disc member I30, said relatively thick member being formed of friction metal designed to be wornaway by the braking process and being secured to the member I28'as by casting thereon or other convenient means. The said members I30 are comprised of a series of fiat members I3I, I3I with intervening channels I33, I33, said arrangement facilitating the circulation of cooling means between the members I 3|, I3I and between abutting plates as the brake assembly is compressed by the power means to produce the braking action,

A fragmentary side elevation of the stationary plate 88 is afforded by the view in Figure 5 wherein it may be noted that about the outer edges thereof are formed a plurality of slots I32, I32 cooperating with the before-mentioned positioning means 90, 90 to retain said stationary plates against rotation. In altematearrangement with said positioning means are the before-- mentioned release springs I24 serving to spread the stationary plates when the brakes are released.

It will be understood by those skilled in the art that torque will be applied to the journal box when the brakes are applied and this may tend to bind the journal box in the laws or columns of the side frame within which it is confined. If desired, therefore, the outer wall of the journal boxmay be formed with top and bottom lugs I34 and I36 respectively, afiording pivotal connections as at I38 and I40 for torque rods I42 and I44. The opposite end of the torque rod I42 may have a pivotal connection as at I48 "to the bracket I48 integrally formed with or otherwise? secured to the compression member 4, and the bottomt'orquear n I44 likewise may have a pivotal connection atitsflpposite end ment as at we with the ring nut IN. The said ring nut III I may be formed intop and bottom halves I58 and IE8 for convenience of assembly, said halves having at their opposite ends lugs I60, I80 with aligned openings within which may between.

as at I50 to the bracket I52 secured 05' the-ten sion member 5 of said side frame adjacent its juncture with the column 8.

It is to be understood that we do not wish to be limited by the exact embodiments of the device shown which are merely by way of illustration and not limitation as various and other forms of the device will, of course, be apparent to those skilled in the art without departing from the spirit of the invention or the scope of the claims. I

We claim:' I

1. In a railway car truck, a frame having a side member with pedestal Jaws, a journal box positioned in said Jaws, resilient means seated on said box and supporting said side member, an anti-friction wheel and axle assembly comprising a normally non-rotating axle having an end supported in said jaws, a rotatable axle sleeved over said non-rotating axle, a wheel fixed on said rotating axle, an anti-friction bearing between said axles, rotatable and non-rotatable braking discs inter-leaved between said Journal box and said wheel, and power means mounted on said journal box and operable to move certain of said plates axially of said structure.

2. In a railway-car truck, a frame having a side member with pedestal jaws, a Journal box positioned in said jaws, resilient means seated on said box and supporting said side member, an anti-friction wheel and axle assembly comprising a normally non-rotating axle having an end supported in said box, a rotatable axle sleeved over said non-rotating axle, a wheel fixed on said rotating axle, an anti-friction bearing between said axles, rotatableand non-rotatable braking discs inter-leaved between said journal box and said wheel, a ring-type cylinder mounted on said journal box and a piston operable therein to move certain of said discs axially of said structure.

3. In a railway car truck, a frame, a journal box, a wheel and axle assembly comprising 'a stationary axle supported in said box, and a rotatable axle supporting said wheel, rotatable and non-rotatable braking discs inter-leaved between said wheel and box, power means mounted on said box operable to move certain of said discs axially of said assembly to brake said wheel, and release means interposed between said discs, certain of said release means being operable to space said non-rotatable discs and other of said release geans being operable to space said rotatable scs.

4. In a railway car truck, a frame, a journal having a relatively stationary axle with an end The view of Figure 4 shows'the inner wall. I54 supported in said box; a rotatable axle,-an antiof the journal box I8 as a disc-like member on. the inboard face of which is integrally formed the before-mentioned ring cylinder -II6, the outer perimeter of which has the before-mentioned annular flange I08 threaded for engagefriction bearing between said'axles, a closure plate forsaid bearing, a wheel fixed on said rotatable axle, braking discs inter-leaved between said box and said wheel, certain of said discs being supported on said rotatable axle for rotation therewith, release means interposed to space said discs axially of said assembly, and power means mounted on'said journal box and operable to compress said release means and engage said discs to brake said wheel.

5. In a railway car truck, a frame having a side member with pedestal jaws, a journal box positioned in said jaws, resilient means seated on saidbox and supporting said side member, an

anti-friction wheel and axle assembly comprising a normally non-rotating axle having an end supported in said jaws, a rotatable axle sleeved over said non-rotating axle, a wheelflxed on said rotating axle, an anti-friction bearing between said axles, and rotatable and non-rotatable braking discs inter-leaved between aid journal box and said wheel.

6. In a railway car truck, a frame, a journal box, an anti-friction wheel and axle assembly having a relatively stationary axle with an end supported insaid box, a rotatable axle, a wheel fixed thereon, a roller bearing between said axles,

} porting a wheel, a roller bearing between said axles, normally spaced braking discs ihter-leaved between said box and said wheel, means on said,

journal box operable to move certain of said discs axially of said structure to brake said wheel, and meansconnected between said outer wall and said frame-work to transmit torque therebetween.

8. In a railway car truck, a frame, a journal box, an anti-friction wheel and axle assembly having a relatively stationary axle with an end supported in said box, a rotatable axle, an antiiriction bearing between said axles, a closure plate for said bearing, a wheel fixed on said rotatable axle, braking discs inter-leaved between said box and said wheel, certain of said discs being supported on said rotatable axle for rotation therewith, and release means interposed between said discs for spacing said discs axially of said structure.

9. In a railway car truck, a frame, a journal box, a wheel and 'axle assembly having an axle end supported in said box, a ring-type cylinder integrally formed on the inboard wall of said box, an annular flange on said box radially outward of said cylinder, a ring nut having threaded engagement with said annular flange, braking discs inter-leaved between said wheel and said flange, and means operable by said ring nut to move certain of said braking discs axially of said structure for braking said wheel,

10. In a railway car truck, a framework, a journal box having inner and outer walls, power means on said inner wall, an anti-friction wheel and axle assembly having a normally non-rotatable axle with an end supported in said boxand a normally rotatable axle supportinga wheel, a roller bearing between said axles, and normally spaced braking discs inter-leaved between said a box and said wheel, said power means being operable to move certain of said discs axially of said structure to brake said wheel.

11. In a r way car truck, a framework, a journal box having inner and outer walls, an anti-friction wheel and axle assembly having a normally non-rotatable axle with an end supported in said box and a normally rotatable axle supporting a wheel, a roller,bearing between said axles, normally spaced braking discs inter-leaved between said box and said wheel, and means on said journal box operable to move certain of said discs axially of said structure to brake said wheel.

box, a wheel and axle assembly comprising a stationary axle supported in said box and a rotatable axle supporting said wheel, rotatable and non-rotatable braking discs inter-leaved between said wheel and box, power means mounted on said box operable to move certain of said discs axially of said assembly to brake said wheel, release means interposed between said discs, and a torque arm connected between said box and said frame.

14. In a railway car truck, a frame, a journal box, an anti-friction wheel and axle assembly having a. relatively stationary axle with an end supported in said box, a rotatable axle, a wheel fixed thereon, a roller bearing between said axles, a housing for said bearing, normally spaced rotatable and non-rotatable braking discs between said wheel and box, power means on said box operable to move certain of said discs axially of said structure and brake said wheel, and a torque arm connected between said box and said frame.

15. In a railway car" truck having a frame, a journal box having a central journal opening and inboard and outboard walls, a. ring-type cylinder formed-on said inboard wall, an annular flange on said inboard wall outwardly of said cylinder,

a ring nut having threaded engagement with said annular flange, and torque arms interconnected between the outer wall of said journal box and adjacent parts of said frame. A

l6. In a railway car truck having a frame, a journal hox having a central journal opening and inboard and outboard walls, a ring-type cylinder formed on one of said walls, an annular flange encircling said cylinder, a ring nut having threaded engagement with said annular flange, and means connected between one of said outboard walls and said frame for transmission of torque therebetween.

17. In a railway car truck, a frame, a journal box, a wheel'and axle assembly having an axle end supported in said box rotatable and non-rotatable braking discsp-inter' 'leaved between said wheel and saidjournal box, powermeans mounted on said journal box and operable to move said non-rotatable discs and certain of said rotatable discs axially of said structure to brake said wheel, and a torque arm connected between said box and said frame.

18. In a railway car truck, a frame, a journal box, a wheel and axle assembly having an axle end supported in said box, rotatable and non- .wheel and said journal 'said journal box operable to move certain ofsaid discs axially of said structure, and a torque arm connected between said box and said frame.

. of said assembly,

rotatable braking discs inter-leaved between said box, power means on 19. In a railway car truck, a frame, a journal box, .a wheel and axle assembly having an axle end supported in said box, a ring cylinder supported on said box, and a piston therein, braking discs inter-leaved between said wheel and said box, means operable to space said discs axially said piston being operable to compress said discs against each other and brake said wheel, and a torque arm connected between said box and said frame.

20. In a railway car truck having a frame, a journal box having a central journal opening and inboard znd outboard walls, a ring type cylinder formed on said inboard wall, an annular flange on said inboard wall outwardly of said cylinder, and'a ring nut having threaded engagement with said annular flange.

21. In a ra'lway car truck having a frame, a journal box having a central opening and an inboard wall, a ring type cylinder integrally formed on said wall, an annular flange on said wall outwardly of said cylinder, and means connected to said flange for rotation with respect thereto.

22. In a railway car truck a frame, a Journal box having an inboard wall, a wheel and axle assembly having an axle end supported in said box, brakes comprising discs interleaved between said wheel and said box, means operable to space said discs axially of said assembly, and a plurality of radially spaced operating means supported on said wall for independent application of said brakes. l

23. In a railway car truck, a frame, a ournal box having an inboard wall, a wheel and axle assembly including an axle end supported in said box, leaved between said wheel and said box, power means integrally formed in said wall operable to apply said brakes, and hand brake means supported on said wall operable to apply a portion only of said brakes.

24. In a railway car truck. a frame, a journal box having a central opening, and inboard and outboard walls, a wheel and'axle assembly having an axle end supported in said box, brakes comprising interleaved rotors and stators between a wheel and said box, a plurality of independently operable means for actuation of said brakes mounted in one of said walls, and means connecting the other of said walls and said frame for holding said journal box against rotation.

25. In a railway car truck, a frame, a journal box having a central opening, and inboard and outboard walls, a wheel and axle assembly having an axle end supported in said'box, brakes comprising interleaved rotors and stators between a wheel and said box, power means mounted in one of said walls for actuation of said brakes, and a torque connection between the other of said walls and said frame.

26. In a railway car truck, a frame, a journal box, a wheel and axle assembly comprising an outer axle, an inner axle having an end supported in said box, axles, an anti-friction bearing therein, a closure plate for said cavity, rotors supported on said plate between said wheel and said box, stators supported from said box and interleaved between said rotors, and power means for compressing brakes comprising rotors and stators inter-' a bearing cavity between said stators into a pile for frictional engagement, and

release means operable to maintainsaid rotors and stators in spaced relationship.

28. In a railway car truck, a frame,- a journal box, a wheel and axle assembly comprising an outer axle, an inner axle having'an end supported in said box, a bearing cavity betweensaid axles, an, anti-friction bearing thereinya' closure plate for said cavity, rotors supported on' said plate between said wheel and said box, stators supported from said box and interleaved between said rotors, power means for compressing'said'rotors and stators into a pile for frictional engagement,

and hand brake means for bringing one of said stators into engagement with one of said rotors.

29. In a railway car truck, a frame, a journal box, a wheel and axle assembly having an axle end supported in said box, brakes comprising rotors and stators interleaved between a-wheel and said-box, and a plurality of radially spaced means-"on said box independently operable to apply said brakes.

30. Ina railwaycar truck,a' frame, a journal box, a wheel and axle assembly having an axle end supported in' said box," brakes comprising rotors and stators interleaved between'a wheel and said box, a plurality of means: on said box operable to apply said brakes, said means comprising a power cylinder operable to actuate all of said brakes, and hand brake means operable to actuate a portion only thereof.

31. In a railway car truck, a frame, a journal box having an inboard wall, a wheel and axle assembly having an axle end supported in said box, brakes comprising interleaved rotors and stators between a wheel and said box, and a plurality of radially spaced independently operable means mounted in said wall for actuation of said brakes.

32. In a railway car truck, box having an inboard wall, a wheel and axle assembly having an axle end supported in said box, brakes .comprising interleaved rotors and stators between a wheel and said box, and a plurality of radially spaced independently operable means mounted in said wall for actuation of said brakes, one of said operable means comprising a ring cylinder integrally formed in said wall.

33. In a railway'car truck, a frame, a journal box having an inboard wall, a wheel and axle assembly having an axle end supported in said box, brakes comprising interleaved rotors and stators betweenv a wheel and said box, a plurality of independently operable means mounted in said wall for actuation of said brakes, one of said operable means comprising a ring cylinder integrally formed in said wall, and the other of said operable means being manually operable to frictionally engage only certain of said rotors and stators.

34. In a railway car truck, a frame, a journal box, a wheel and axle assembly having an axle supported in said box, brakes comprising rotors and stator interleaved between said wheel and a frame, a journ al said box, .independently operable power means and hand brake means mounted on said box for actuation of said brakes, and a torque member connecting said journal box and said frame.

35. In a railway car truck, a frame, a journal ,-box, a wheel and axle assembly having an axle supported in said box, brakes comprising rotors and stators interleaved between said wheel and said box, and radially spaced independently operable power means and hand brake means mounted 1i said box for actuation of said brakes, said power: meansbeing operable to actuate all of -said brakes.

'36.- In a railway car truck, a frame, a journal box,:a wheel and axle assembly having an axle supported in said box, brakes comprising rotors and stators interleaved between said wheel and said box, independently operable power means and hand brake means mounted on said box for actuation of said brakes, said power means being operable'to actuate all of said brakes, andsaid hand brakemeans being operable to operate a portion only of said brakes.

3'7. In a railway car truck, a frame, a journal box, a wheel and axle assembly having an axle end supported in said box, brakes comprising rotorsand stators interleaved betweensaid wheel and said box, a plurality of means on said box independently operable to apply said brakes, and

' resilient release means for said brakes.

38. In a railway car truck, a frame, a journal box, a wheel and axle assembly having an axle end supported in said box, brakes comprising rotors and stators interleaved between said wheel and'said box, a plurality of means on said box supported from each wheel and stators supported from the ends of said nonrotating axle, and means for actuating said braking means.

41.'In a vehicle, a frame member, a wheel and axle. assembly comprising an outer axle, wheels thereon, and an inneraxle having ends projectindependently operable to apply said brakes. and

release means for said brakes, certain of said release means being supported from said'box, and certain of said release means being supported from said wheel.

40. In a vehicle, a frame member, a supporting wheel and axle assembly, and braking means for said assembly, said assembly comprising a rotating axle, wheels fixed thereon, a normally nonrotating axle, anti-friction bearings between said axles, said braking means comprising a rotor ing outwardly of said wheels, interleaved rotors and stators supported respectively from said wheels and said projecting ends, and means operableto bring said rotors and stators into engagement with each other.

- 42. In a vehicle, a frame, a supporting wheel and axle assembly comprisingan outer axle, wheels thereon, an inner axle having journal ends, and rotors and stators supported respectively from said wheels and said journal ends, and actuating means for moving said rotors and stators axially into engagement.

43. In a vehicle, a frame member, a supporting wheel and axle assembly having an outer axle, wheels fixed thereon, an inner axle sleeved'within said outer axle, anti-friction bearings between said axles; rotors supported from respective wheels, stators supported from said inner axle outwardly of respective wheel, and means operative to move said rotors and stators axially into engagement.

44. In a vehicle, a frame, a supporting wheel and axle assembly comprising an outer axle,

wheels thereon, an inner axle having journal ends, rotors and stators supported respectively from said wheels and said journal ends, and actuating means on one of said axles for moving said rotors and stators intoengagement with each other.

45. In a vehicle, a frame, a supporting wheel and axle assembly comprising an outer axle, wheels thereon, an inner axle having projecting ends, rotors and stators supported respectively from said wheels and said projecting ends, and

CARL E. TACK.

CERTIFICATE OF commence. Patent No. 2,281,557. April 28, -19m.

WILLIAM s. SPIE'I'H, mum.

It is hereby certified that error appears in the printed specification of the above numbered'patent requiring correctionas follows: Page 11., second oolumn, line 55, olaim 16, for "hex" read --box--; line 65, claim 17, after "box" insert-a. commg; page 6, second column, line 25, claim k5, for respective read --each-; line 26, same claim, for'Said" read --respective"; and that the said. Letters Patent shouldbe read with this correction therein'that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 22nd day of September, A. D. 1934.2.

Henry Van Arsdale,

(Seal) Acting Commissioner of Patents. 

